# Double Replacement Reactions

Pages: 4 (966 words) Published: April 25, 2011
Title: Double Replacement Reactions (Data and Calculations)
Objective: Classify the chemical reaction through observation, which each reagent produce when mixed with another reagent. After careful observation, be able to prove each observation using the net ionic equation. Background: First, a double-replacement reaction is when two cations in different compound switch anions, AX + BZ → BY. If either compounds are insoluble a precipitate occurs, and if there is no precipitate formed there is no reaction. Also, not all ionic compounds are soluble in water, and there are a few solubility rules that need to be followed (see Chapter 8 in book). Second, there is also something known as a neutralization reaction, here the reaction is between an acid and base, HX + BOH → BX + HOH. A neutralization reaction produces a salt and water. Total net equation is all of the molecules in your first reagent combined with your second reagent yielding your outcome. A net ionic equation is a chemical equation that shows the ionic reaction that takes place in a reaction, in this case a double- replacement reaction, after spectators ions have been cancelled out from the total ionic equation and that if there is any. Third, spectator ions are ions that are in an aqueous solution, meaning that they are in water, and that they do not participate in a reaction. Equation that you have left after spectator ions have been cancelled out is your net ionic equation. Obtain 20 clean dry small test tubes. Obtain a sample of each reagent, fill each test tube ¼ full, and when done, mix the two together. Mixtures to be tested are: 1)Sodium chloride and potassium nitrate

2)Sodium Chloride and silver nitrate
3)Sodium carbonate and hydrochloric acid
4)Sodium hydroxide and hydrochloric acid
5)Barium chloride and sulfuric acid
6)Aqueous ammonia and sulfuric acid
7)Copper (II) sulfate and zinc nitrate
8)Sodium carbonate and calcium carbonate
9)Copper (II) sulfate and ammonium...

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